senator chuck hagel faced a hostile reception today from half of the committee that must sign off before he can become secretary of defense. his senate confirmation hearing centered heavily on criticism from his one-time republican colleagues. the atmosphere was friendly enough at the outset as chuck hagel began his big day before the armed services committee. he quickly sought to allay concerns on both sides about his positions on everything from iran to israel to nuclear weapons. >> no one individual vote, no one individual quote, no one individual statement defines me, my beliefs, or my record. my overall world view has never changed: that america has and must maintain the strongest military in the world. >> i believe, and always have, that america must engage, not retreat, in the world, but engage in the world. my record is consistent on these points. >> woodruff: but as a nebraska senator, in 2007, hagel angered fellow republicans when he opposed the surge of u.s. troops into iraq. today, his former close friend, arizona senator john mccain made clear, they haven't forgotten. >> wer